General Notes
233
It appears that the arithmetic coding option of the JPEG spec is covered by patents owned by IBM, AT&T, and Mitsubishi. Hence arithmetic coding cannot
legally be used without obtaining one or more licenses. For this reason, support for arithmetic coding has been removed from the free JPEG software.
(Since arithmetic coding provides only a marginal gain over the unpatented Huffman mode, it is unlikely that very many implementations will support it.)
So far as we are aware, there are no patent restrictions on the remaining code.
The IJG distribution formerly included code to read and write GIF files. To avoid entanglement with the Unisys LZW patent, GIF reading support has been
removed altogether, and the GIF writer has been simplified to produce "uncompressed GIFs". This technique does not use the LZW algorithm; the
resulting GIF files are larger than usual, but are readable by all standard GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of CompuServe Incorporated. GIF(sm) is a Service Mark property of CompuServe
Incorporated."
libpng
This projector product includes the open source software program "libpng" which applies the terms and conditions provided by owner of the copyright to
the "libpng".
The "libpng" are WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.
List of libpng programs
•
libpng-1.2.7
•
libpng-1.2.44
License terms of conditions of each program which are provided by owner of the copyright to the "libpng" are as follows.
For conditions of distribution and use, see copyright notice in png.h Copyright (c) 1998-2004 Glenn Randers-Pehrson (Version 0.96 Copyright (c) 1996,
1997 Andreas Dilger) (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
This copy of the libpng notices is provided for your convenience. In case of any discrepancy between this copy and the notices in the file png.h that is
included in the libpng distribution, the latter shall prevail.
COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following this sentence.
libpng version 1.2.6, September 12, 2004, is Copyright (c) 2004 Glenn Randers-Pehrson, and is distributed according to the same disclaimer and license as
libpng-1.2.5 with the following individual added to the list of Contributing Authors
Cosmin Truta
Содержание PowerLite Pro Z8250NL
Страница 1: ...PowerLite Pro Z8150NL Z8250NL Z8255NL Z8350WNL Z8450WUNL Z8455WUNL User s Guide ...
Страница 8: ...8 Introduction This chapter explains the projector s features and the part names ...
Страница 24: ...24 Useful Functions This chapter explains useful tips for giving presentations and the security functions ...
Страница 86: ...Network Menu 86 q Web Control is used to set certificates s Setting Certificates p 131 ...
Страница 92: ...92 Troubleshooting This chapter explains how to identify problems and what to do if a problem is found ...
Страница 115: ...115 Maintenance This chapter explains the maintenance methods that are required to ensure a long projector service life ...
Страница 127: ...127 Monitoring and Controls This chapter explains the functions that can be used to monitor and control the projector ...
Страница 144: ...144 Network Functions This chapter explains the additional functions for networks ...
Страница 196: ...196 Appendix ...